Hi Yash,

No, they are not linked and have to be entered separately.

From the IFS Documentation:

Demand Planner: A campaign header is defined by a start date, end date and description. A campaign detail is added to the individual parts. A campaign detail is the increased sales quantity you accept the selected campaign (header) will have on the part. You add a campaign detail to the current selected flow-part/group that you have selected in the GUI of the Demand Client. When you add a campaign detail on a part that part will be member of that group, and the parts forecasted sales will increase in the period where the campaign is defined. You also have a separate line in the forecast graph and forecast table that states the parts/groups forecasted campaign quantity.

I hope this helps.

Richard